Until recently, Verizon was offering new subscribers $30 for unlimited data for one handset, and between $20 to $80 for mobile broadband for tablets, netbooks, and mobile hotspots. However, most business travelers may be most interested in what the new tiered plans could be.

The truth is that for many users this might be business as usual. Verizon maintains that the majority of users--95 percent, by some accounts--never even hit the 2GB mark. But for others it could result in a transition period where users are forced to determine whether the new 2GB plan for $30 per month is enough, or if upping to 5GB per month at $50 makes more sense. Heavy-duty users will also have the option of going for 10GB for $80 per month.

This is really difficult to figure out. Smartphone users tend to rely heavily on their devices, and when out in the "wild" as it were; these handsets are the lifelines to email, Web, and other data transmissions. The carrier is looking to ditch the unlimited, so-called "all-you-can-eat" plan in favor of what has been called .

If you are mostly reading and sending email, and only occasionally viewing the Web, then 2GB could be fine. But factor in VoIP, video, and other data and suddenly it could be back to the old days when users watched their cell phone minutes very closely as the month ticked away. The last thing a road warrior wants to do is avoid pulling out the phone to get directions in fear of .

Fortunately, at the reported $10 per GB overage, it probably isn't a make-or-break deal, but for those who try to pinch pennies these overages can add up somewhat quickly. Most email probably won't knock users over the limit, but those who get large attachments should be more concerned. While even 100 emails a day isn't an issue, a few large files could eat up a lot of data.